* 20 denier* Built-in support* Comfortable bump support* Bum & thigh control* 85% Nylon* 15% Elastane These soft and supportive maternity tights feature a non-binding waistband, under bump support section and lots of stretch to ensure they grow with you throughout the length of your pregnancy, expanding and stretching in the belly area through each trimester.  Spanx Mama Sheer Maternity Tights ()